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45 Cards in this Set
- Front
- Back
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universe
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the whole body of things and phenomena observed or postulated
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galaxy
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any of the very large groups of stars and associated matter that are found throughout the universe
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nebula
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any of numerous clouds of gas or dust in interstellar space
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sun(gases)
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the luminous celestial body around which the earth and other planets revolve, from which they receive heat and light, which is composed mainly of hydrogen and helium, and which has a mean distance from earth of about 93,000,000 miles (150,000,000 kilometers), a linear diameter of 864,000 miles (1,390,000 kilometers), and a mass 332,000 times greater than earth
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space station
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a large artificial satellite designed to be occupied for long periods and to serve as a base (as for scientific observation) —called also space platform
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telescope
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a usually tubular optical instrument for viewing distant objects by means of the refraction of light rays through a lens or the reflection of light rays by a concave mirror
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Sputnik I
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any of a series of earth-orbiting satellites launched by the Soviet Union beginning in 1957
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Earth year
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the period of about 3651/4 solar days required for one revolution of the earth around the sun
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asteroid
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any of the small rocky celestial bodies found especially between the orbits of Mars and Jupiter
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comet
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a celestial body that appears as a fuzzy head usually surrounding a bright nucleus, that has a usually highly eccentric orbit, that consists primarily of ice and dust, and that often develops one or more long tails when near the sun
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orbit
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a path described by one body in its revolution about another (as by the earth about the sun or by an electron about an atomic nucleus); also: one complete revolution of a body describing such a path
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full moon
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the moon with its whole apparent disk illuminated
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rover
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a vehicle for exploring the surface of an extraterrestrial body (as the moon or Mars)
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space race
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the perid of time when the u.s. and soveit union were raceing to get things into space
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apollo 11
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any of a class of asteroids having an orbit that extends from inside to beyond the earth's orbit
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Neil armstrong
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one of the people who went on the apollo 11 mission
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asteroid belt
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the region of interplanetary space between the orbits of Mars and Jupiter in which most asteroids are found
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rotation
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the action or process of rotating on or as if on an axis or center (2): the act or an instance of rotating something
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seasons
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a period of the year characterized by or associated with a particular activity or phenomenon <hay fever season>: as (1): a period associated with some phase or activity of agriculture (as growth or harvesting) (2): a period in which an animal engages in some activity (as migrating or mating); also: estrus, heat (3): the period normally characterized by a particular kind of weather <a long rainy season> (4): a period marked by special activity especially in some field <tourist season> <hunting season> (5): a period in which a place is most frequented
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satellite
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a celestial body orbiting another of larger size
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white light
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light that is composed of a wide range of electromagnetic frequencies and that appears colorless to the eye
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tilted axis
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a straight line about which a body or a geometric figure rotates or may be thought of as rotating
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meteroid
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a meteor particle itself without relation to the phenomena it produces when entering the earth's atmosphere
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revoultion
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the action by a celestial body of going round in an orbit or elliptical course; also: apparent movement of such a body round the earth
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moon phases
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The phases are the different shapes that the Moon seems to have when it is observed from Earth. This is due to the location of the Moon in its orbit, so that we only see a portion of its surface as illuminated by the Sun.
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inner planet
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any of the four planets closest to the sun: Mercury, Venus, the earth, or Mars.
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gravity
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the gravitational attraction of the mass of the earth, the moon, or a planet for bodies at or near its surface (2): a fundamental physical force that is responsible for interactions which occur because of mass between particles, between aggregations of matter (as stars and planets), and between particles (as photons) and aggregations of matter, that is 10-39 times the strength of the strong force, and that extends over infinite distances but is dominant over macroscopic distances especially between aggregations of matter —called also gravitation, gravitational force.
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wavelenghts
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the distance in the line of advance of a wave from any one point to the next point of corresponding phase
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ROYGBIV
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red orange yellow green blue indigo violet
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greenhouse efffect
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. The phenomenon whereby the earth's atmosphere traps solar radiation, caused by the presence in the atmosphere of gases such as carbon dioxide, water vapor, and methane that allow incoming sunlight to pass through but absorb heat radiated back from the earth's surface.
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meteor
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any of the small particles of matter in the solar system that are directly observable only by their incandescence from frictional heating on entry into the atmosphere
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tides
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the alternate rising and falling of the surface of the ocean and of water bodies (as gulfs and bays) connected with the ocean that occurs usually twice a day and is the result of differing gravitational forces exerted at different parts of the earth by another body (as the moon or sun)
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new moon
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Astronomy one of the four principal phases of the moon, occurring when it lies between the earth and the sun
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outer planets
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any of the planets Jupiter, Saturn, Uranus, and Neptune whose orbits lie beyond the asteroid belt
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weight
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the standard or established amount that a thing should weigh
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soviet union
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" a former federal republic in E Europe and central and N Asia: the revolution of 1917 achieved the overthrow of the Russian monarchy and the USSR was established in 1922 as a Communist state. It was the largest country in the world, occupying a seventh of the total land surface. The collapse of Communist rule in 1991 was followed by declarations of independence by many of the constituent republics and the break-up of the Soviet Union. Official name Union of Soviet Socialist Republics Also called Russia Soviet Russia Abbreviation USSR
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mass
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a quantity or aggregate of matter usually of considerable size
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meteorite
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a meteor that reaches the surface of the earth without being completely vaporized
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solor eclipse
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an eclipse of the sun by the moon
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lunar eclipse
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an eclipse in which the full moon passes partially or wholly through the umbra of the earth's shadow
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terrestrail planets
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also know as the outer planets
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gas planet
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A large, massive, low-density planet composed primarily of hydrogen, helium, methane, and ammonia in either gaseous or liquid state. Gas giants have swirling atmospheres primarily of hydrogen and helium, with no well-defined planetary surface; they are assumed to have rocky cores. They are also characterized by ring systems, although only Saturn's is readily visible from Earth. Our solar system contains four gas giants: Jupiter, Saturn, Uranus, and Neptune. The majority of extrasolar planets discovered so far are the size of the solar system's gas giants, although they orbit their stars much more closely and may differ in composition from ours. Also called Jovian planet. Compare terrestrial planet.
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equator
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the great circle of the celestial sphere whose plane is perpendicular to the axis of the earth
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direct/indirect light
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depends on where on earth you are
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Curiosity rover
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the last known rover to be sent to mars.
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